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Explain the importance of: (a) nitrate ions for making amino acids (b) magnesium ions for making chlorophyll
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1 Answer State the word equation for photosynthesis as: carbon dioxide + water → glucose + oxygen in the presence of light and chlorophyll
1 Answer Describe photosynthesis as the process by which plants synthesise carbohydrates from raw materials using energy from light
1 Answer Explain the effect of changes in pH on enzyme activity in terms of shape and fit and denaturation
1 Answer Explain the effect of changes in temperature on enzyme activity in terms of kinetic energy, shape and fit, frequency of effective collisions and denaturation
1 Answer Explain the specificity of enzymes in terms of the complementary shape and fit of the active site with the substrate
1 Answer Explain enzyme action with reference to: active site, enzyme-substrate complex, substrate and product
1 Answer Investigate and describe the effect of changes in temperature and pH on enzyme activity with reference to optimum temperature and denaturation
1 Answer Describe enzyme action with reference to the shape of the active site of an enzyme being complementary to its substrate and the formation of products
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